I remember how one of my comrades told me that he did not have enough hours in the day. But if he knew how on-call plumbers work, he would understand that even impossible is possible. Look at the lifestyle 25 hour emergency plumbing service - they are ready to fly to your rescue at any time, and this is great, because you know that you can always get such support . I hope you don't have to deal with them. But keep it anyway.